Practical control for improving power density and efficiency of the BLDC generator
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abstract
This paper presents an advanced control technique for maximizing power density and efficiency of the Brushless DC (BLDC) generator by using a linear tracking method and also suggests a sub-optimal control method in practical applications. In a generator of given rating, the weight and size of the system affect the fuel consumption directly; therefore, power density is one of the most important issues in a stand-alone generator. Conventional rectification methods cannot achieve the maximum power possible because of a non-optimal current waveform. The optimal control scheme to maximize power density and minimize machine size and weight in a nonsinusoidal power supply system has been derived, incorporated in a control system, and verified by simulation and experimental work. A new simple algebraic method has been proposed to accomplish the proposed control without an FFT which is time consuming and complicated.
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Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04.